Observations of double-bent radio sources provide a powerful tool to probe the properties of the IGM in galaxy groups. We have carried out a series of simulations of AGN jets being bent by interaction with an external medium. This allows us to determine how different quantities affect the radius of curvature of the jets, and to quantify how accurately the density of the IGM can be determined from observations. We are also able to model the X-ray and extended radio emission that we predict to be associated with double-bent radio sources.